Controversial Republican billionaire brothers Charles and David Koch -- who have spent untold millions bankrolling right-wing candidates and causes -- are now the subject of a new Bloomberg investigation that shows Koch Industries profited from doing business with Iran.

This is all despite American trade sanctions against Iran and the country’s known links to financing terrorists.

House Republican Leadership’s response: Silence.

This is unacceptable. We can’t let this stand.

Sign our petition right now demanding that House Republicans immediately demand an investigation of Koch Industries’ business dealings with Iran.

If we can get 50,000 signatures, we will deliver them directly to Republican Speaker Boehner and Majority Leader Cantor.

Bloomberg reported that Koch Industries benefited from bribes to win business and sold millions of dollars of equipment to the Iranian regime which is known for their sponsorship of terrorism and calls of "death to America."

Charles and David Koch who run Koch Industries are the same billionaire brothers who have fought for taxpayer subsidies for their own Big Oil interests and advocate privatizing Social Security.

We need to show grassroots Democrats are strong and unified in telling Speaker Boehner and Leader Cantor they must immediately demand an investigation of Koch Industries and its business dealings with Iran. Help us reach 50,000 people standing strong.